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Installation is very streamlined and a rapid process. Depending on the size of the roof and the experience of the crew, it is possible to remove old shingles and apply new ones on 2-3 houses in one day. Life span varies. Use only on slanted roofs. [4] Rubber shingle, an alternative to asphalt shingle, slate, shake or tile.
Roofing slates. Roofing slates are roofing tiles made out of slate. The rock is split into thin sheets which are cut to the requires size before shipment. This contrasts to slabs which are milled to produce larger structural components. [1] They are the primary product of the slate industry.
Where slates are particularly heavy, the roof may begin to split apart along the roofline. This usually follows rot developing and weakening the internal timbers, often as a result of poor ventilation within the roof space. An important aspect to slate roofs is the use of a metal flashing which will last as long as the slates. Slate shingles ...
The roof underlayment is used to prevent accidental penetration of rainwater or powdery snow, to prevent convective exchanges with thermal insulation, and to control the migration of water vapor. [1] It is an element of the building's thermal performance. [2] The roof underlayment is placed between the frame and the roof support.
A common repair to slate roofs is to apply 'torching', a mortar fillet underneath the slates, attaching them to the battens. [1] [3] This may applied as either a repair, to hold slipping slates, or pre-emptively on construction. Where slates are particularly heavy, the roof may begin to split apart along the roof line.
Building codes in the U.S. specify ventilation rates as a minimum of 1 sq ft (0.093 m 2) of opening per 150 sq ft (14 m 2) (1:150) with a ratio of 1:300 in some conditions. [8] Warm air rises, so ceiling insulation is designed to have a higher r-value and the insulation is often installed between the ceiling joists or rafters.
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